AEMC 8505 Manuel utilisateur

Quick Tester

Model 8505

ENGLISH

Quick Start Guide

www.aemc.com

CHAUVIN ARNOUX GROUP

2Quick Tester Model 8505

Table of Contents

1. INTRODUCTION ................................................................................. 3

1.1 Receiving Your Shipment .........................................................3

1.2 Ordering Information ................................................................3

1.2.1 Replacement Parts........................................................3

1.3 Introducing the Quick Tester Model 8505.................................4

2. OPERATION....................................................................................... 6

2.1 Performing a Self-Test..............................................................6

2.2 Testing Transformers and Capacitors.......................................8

2.2.1 Performing a Test ..........................................................9

2.2.2 Testing a Single-Phase Transformer .............................9

2.2.3 Testing a Three-Phase Transformer............................ 11

3. SPECIFICATIONS ............................................................................. 13

4. MAINTENANCE................................................................................ 14

4.1 Cleaning .................................................................................14

4.2 Repair.....................................................................................14

4.3 Technical and Sales Assistance .............................................14

4.4 Limited Warranty ....................................................................15

4.5 Warranty Repairs....................................................................15

Quick Tester Model 8505

1. INTRODUCTION

1.1 Receiving Your Shipment

Upon receiving your shipment, make sure that the contents are

consistent with the packing list. Notify your distributor of any missing

items. If the equipment appears to be damaged, le a claim immediately

with the carrier and notify your distributor at once, giving a detailed

description of any damage. Save the damaged packing container to

substantiate your claim.

1.2 Ordering Information

Quick Tester Model 8505...................................................Cat. #2136.51

Includes a soft carrying case, probe, two alligator clips and a user manual.

1.2.1 Replacement Parts

Soft Carrying Case .............................................................. Cat. #2139.72

Probe................................................................................... Cat. #5000.70

One Black Alligator Clip.......................................................Cat. #5000.71

Order Accessories and Replacement Parts Directly Online

Check our Storefront at www.aemc.com for availability

4Quick Tester Model 8505

1.3 Introducing the Quick Tester Model 8505

The AEMC®Quick Tester Model 8505 is a hand-held instrument for

performing quick basic integrity tests on transformers and capacitors

used by electrical utilities. This instrument is a fast and inexpensive

inspection tool for detecting opens or shorts caused by shipping damage

or workmanship issues, and for verifying the proper operation of

switching components.

The Model 8505 veries transformers with functional coils without

requiring a full transformer ratio test. A single user can check a shipment

of incoming transformers; units that have a defective coil or switch can

be quickly pinpointed and turned around for repair. The instrument

provides simple, single-button operation; the user only needs to make

the proper connections and push a button. Test results are clearly

indicated by bright LEDs and (when applicable) a buzzer. The instrument

includes captive cables with safety clips, test probe, and a built-in fuse

for protection; and operates on four AA batteries. It also automatically

detects whether or not the unit under test is a transformer or a capacitor.

The Model 8505 features internal multi-frequency ACV source and

loads to accommodate the testing of a wide range of transformers and

capacitors. Its microprocessor-based design provides a high level of

control, stability, and repeatability. Other Model 8505 features include

built-in self-test components, fuse protection, and an indicator providing

ample warning for low battery. Typical users include electrical utility

maintenance and management personnel at electrical utility supply and

transformer repair facilities. For instance, electrical utility sta󰀨 can use

Quick Tester Model 8505

the Model 8505 to test an incoming shipment of transformers from the

manufacturer to determine whether or not to accept the shipment or

send it back due to damage. The Model 8505 can similarly test phase

compensation capacitors for basic operation.

The Model 8505 comes with a probe, two alligator clips, and a carrying

pouch (see the illustration on the previous page). The probe and the

alligator clip are threaded and must be screwed on to the cable.

The Quick Tester Model 8505 is a companion product to AEMC’s DTR®

Model 8510 transformer tester. The Model 8505 di󰀨ers from the Model

8510 in that the Model 8510 provides more detailed information about

the unit under test, but requires more time to set up and obtain results.

For example, the Model 8505 can determine whether or not to accept or

reject the incoming transformer; the Model 8510 is then used when the

transformer is subsequently set up and installed for operation.

6Quick Tester Model 8505

2. OPERATION

2.1 Performing a Self-Test

Before using the Model 8505, perform a short series of self-tests to

ensure the instrument is functioning properly.

1. Locate the Model 8505 SELF TEST LEAD, labeled at the top of the

instrument’s front panel.

2. Attach the probe to the SELF TEST LEAD by inserting the lead into

the probe. Screw the probe into the cable.

3. Attach one of the alligator clips to the other (unlabeled) lead.

Quick Tester Model 8505

4. With the probe and clip separated, press the TEST button in the

center of the Model 8505 front panel.

The red OPEN light should blink while the button is depressed.

Release the button.

5. Connect the alligator clip to the probe tip, and press the TEST button

again. The red SHORT light should blink while you hold down the

button.

6. Separate the probe from the clip. Insert the tip of the probe into the

terminal labeled SELF TEST (T), and then press the TEST button.

The green Transformer (T) PASS light should blink, and the buzzer

should emit a steady sound.

7. Insert the probe into the terminal labeled SELF TEST (C), and press

TEST. The green Capacitor (C) PASS light should blink, and the

buzzer should sound.

If any of the preceding tests fail to produce the response described

above, return the instrument to AEMC®for repair.

8Quick Tester Model 8505

2.2 Testing Transformers and Capacitors

WARNING

Before performing a test on a capacitor or transformer, ensure it is

fully de-energized. Testing an energized transformer or capacitor is a

potential shock hazard to the user and may damage the Model 8505.

When using the Model 8505 to check the secondary side of

transformers, note that high voltage may be present on the primary

side. Be sure to avoid any contact with primary-side connections

that have not been fully de-energized.

The Model 8505 is designed for testing the integrity of transformers and

capacitors used in the power industry.

With the Model 8505, you can test:

●Transformers that have newly arrived at your facility. During

transport, vibration and shock can result in the transformer coils

to short, open, or disconnect from the terminals. Although it’s

possible for a transformer turn ratio meter to test for integrity,

this type of instrument requires more time and labor to set up,

connect to the transformer, and perform the test. The Model 8505

can perform a very quick and simple integrity test, enabling you

to test multiple transformers in a short amount of time.

●A transformer transported back to the repair facility. You can use

the Model 8505 to ensure that the basic continuity of all the coils

is intact before performing more detailed tests.

●Capacitor terminals or plates that may be damaged. The Model

8505 can quickly determine whether or not a capacitor is still

functioning to determine whether more detailed tests and repairs

are necessary.

Note that if a transformer coil is partially damaged – for instance, some

internal turns have shorted but there is continuity as a coil – or if a

capacitor is partially damaged but is still functioning as a capacitor, the

Model 8505 will not detect an error. (A turn-ratio meter or a winding

resistance meter would be a more e󰀨ective instrument for detecting this

condition.)

Quick Tester Model 8505

2.2.1 Performing a Test

Testing a transformer or capacitor is very simple and straightforward.

●To test a transformer, connect the alligator clip to one end

terminal of the transformer’s coil and touch the probe to the

other end terminal of the coil. If there is continuity, the green

Transformer (T) PASS light will blink and the buzzer will sound.

If the coil is open, the red OPEN light will blink, and no buzzer

sounds. Note that you can test both single-phase and three-

phase transformers, as explained in detail later in this section.

●To test a capacitor, connect the alligator clip to one terminal

and touch the probe to the other terminal. If the capacitor is

functional, the green Capacitor (C) PASS light blinks and the

buzzer sounds. If the capacitor is shorted, the red SHORT light

blinks and no buzzer sounds.

2.2.2 Testing a Single-Phase Transformer

In single-phase power transformers, the primary coil(s) are accessible

over the insulators (bushings); the secondary coil(s) are more easily

accessible over the tank. When a coil is checked, the green Transformer

(T) PASS blinks and the buzzer sounds if the coil is functioning. Note that

you should disconnect the fuse on the primary side while checking the

integrity of the secondary coils.

To test a single-phase transformer, connect the Model 8505 probe to the

SELF TEST LEAD and the alligator clip to the other unlabeled lead. Then

proceed as follows:

1. Attach the alligator clip to one end terminal of the primary and touch

the other end terminal with the probe. In the diagram below, the

terminals of the primary coil are labeled H1 and H2.

If the coil is functioning the green Transformer (T) PASS light blinks

and the buzzer sounds.

10 Quick Tester Model 8505

2. Connect the alligator clip to one terminal of the secondary and touch

the other terminal with the probe. The secondary coil terminals are

labeled X1, X2, and (for transformers with center-tapped terminals)

X3. If the secondary is not center-tapped, test across X1 and X2. If it

is center-tapped, also test across X1 and X3, and X2 and X3.

In each test, if the coil is functioning the green Transformer (T) PASS

light blinks and the buzzer sounds. (Note that this center tap is

sometimes switched in and out.)

3. If one end of the primary and the center-tapped terminal of the

secondary are connected to the tank (which is solidly earth-grounded

in normal operation), check across H2 to tank and X3 to tank. In both

tests, the red SHORT light should blink.

If any of the preceding tests encounter a problem, the red OPEN light

blinks to indicate the test failed.

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